Machine for winding yarn



March 22 1927- N 1,622,007 R. G. SHARPLES ET AL MACHINE FOR WINDING YARNFiled June 26. 1925 2-Sheets -Sheet1 I a e Ilia mum March 22 1927.1,622,001

' R. G. SHARPLES ET AL MACHINE FOR WINDING YARN Filed June 26. 1925 2Sheets-Sheetz in y n tor- 61 czmfinawzaw Patented Mar. 22, 1927.

UNITED s'ra'rss 1,622,001 PATENT OFFICE.

RICHARD GREENHALGH SI-IARPLES, OF RADCLIFFE, MANCHESTER, AND CHARLESWILBRAI-IAM, CF WORSLEY, MANCHESTER, ENGLAND.

MACHINE FOR WINDING YARN.

Application filed June 26,1925, Serial N 0. 39,690, and in Great BritainJuly 1, 1924.

This invention has reference to yarn winding machines, of the kind knownas warp pirning machines and warp winding machines.

In warp pirning and warp winding ma chines as at present arranged, thespindles carrying the pirns or bobbins have a variable frictional driveand the yarn is generally positively fed or delivered to the spindles ata constant speed by means of feed or delivery rollers which arepositively driven. then the yarn is being wound at the upper ends ortips of the chases on the pirns or .7 the yarn is being wound at thelower parts or bottoms of the chases its pull acts at a maximum radiusand exerts a maximum resistance to the rotation of the spindles whichnow rotate at a minimum s eed and although a maximum quantity of yarn iswound at each rotation, the yarn is nevertheless wound much slacker thanat the topv of the chase.

The object of this invention is to provide an improved drivingarrangement for the feed or delivery rollers, whereby the yarn will bemore securely and uniformly wound,

breakages of the yarn will be reduced to a minimum, weaker yarns may bewound than ordinarily and a bobbin or pirn of given size will containmore yarn than ordinarily.

The invention resides essentially in driving the feed ordelivery rollersthrough automatically variable means which will permit of slip orrelative movement occurring at times between the feed or deliveryrollers and the shaft or the like from which they are driven, andpreferably the arrangement is such that said variable means can drivethe feed or delivery rollers only with the assistance of the spindlespulling on the yarn. V V

In the accompanying drawings Figs 1 and 2 are elevations at right anglesto each other, Fig. 2 being partly insection, of one driving arrangementin accordance with the invention, and Figs. 3 and 4 are end and frontelevations, respectively, of a warp pirning machineembodying a modifieddriving arrangement, only so much of the machine being illustrated as isnecessary for the purpose of elucidation. In the drawings and thefollowing description like numerals of reference refer to like parts.

Referring first to Figs. 1 and 2 of the drawings, 5, 6 and 7 are thefeed rollers which feed the yarn, indicated at m, to the spindles, oneof which is shown at 8 in Fig. 3. From the roller 7 the yarnis led tothe pirns or bobbins on the spindles 8 by means of guides carried by avertically reciprocating and progressively rising frame (not shown) inthe usual way- The roller 5 is driven from the shaft 9 andis geared withand drives the roller 7 while the roller 6 rests upon the rollers 5, 7and is frictionally driven by same. Instead of the roller 5 beingpositively driven from the shaft 9 as ordinarily, it is driven from theshaft through a friction clutch 10. v This friction clutch comprises twosprocket wheels 11, 12, mounted on a common fixed axle 13 with anintervening friction disc 14. The wheel 11 is positively driven from theshaft 9 by a chain 15 and the wheel 12 is driven by friction from thewheel 11 through the medium of the disc 14 and drives the roller 5 bymeans of a chain 16. The frictional engagement between the wheels 11, 12and the friction disc 14 is regulated'as required by means of a nut 17on the axle 13 and a spiral spring 18 arranged on the axle between thenut and a ball thrust ring 19 mounted next the boss of the wheel 11. A.ball thrust ring 20 is mounted between the bossof the wheel 11 and theenlarged end of the axle 13. The friction discv 14 may consist of a discof felt or, and preferably, a disc of wood lined on each side with felt.Any other appropriate frictional disc may, however, be substituted- Inoperation, the frictional engagement between the sprocket wheels 11, 12and the intervening friction disc 14 is adjusted so that such engagementis insufficient to drive the sprocket wheel 12 and the feed or deliveryrollers, 5, 6, 7 without the assistance of the spindles pulling on theyarn. If the tension of the spring 18 is adjustedso that or m thesprocket wheels 11, 12 rotate together as one and the yarn is properlyfed or delivered when it is being wound at the bottom ot'the chases andthe pull of the spindle is a minimum, the sprocket wheel 12 will, whenthe yarn is being wound at the top of the chases and the pull of thespindles is a maximum, slip relatively to or over-run the wheel 11, thusallowing the yarn to be drawn through the feed or delivery rollers 5, 6'and 7 under the increased pull of the spindles and preventing the yarnfrom being broken by excessive tension. If, on the other hand, thetension of the spring 1'8 is so adjusted that the sprocket wheels 11, 12 rotate together as one and the yarn is properly ied or delivered whenit is winding at the top of the chases and the pull of the spindles is amaximum, the wheel 11 will slip relatively to or over-run the wheel 12when the yarn is winding at the bottom of the chases and the pull of thespindles is a minimum- With the spring adjusted so that the wheels 11,12 rotate together as one and the yarn is properly ied or delivered Whenit is winding at an intermediate point in the chase, the wheel 12 willslip when the yarn winds higher up the chase and the pull of thespindles increases, and the wheel 11 will slip when the yarn winds lowerdown the chase and the pull of the spindles decreases.

In a modified arrangement of drive shown in Figs. 3 and a the tension ofthe spring 18 of the friction clutch 10 is automatically varied duringthe rise' and fall ofthe vertically reciprocating frame which carriesthe yarn guides, and the traverse of the yarn up and down the chases ofthe pirns on the spindles 8. This is accomplished by means of a lever21, having its upper end" pivoted in a block 22'adjustably mounted on astud arm 28 projecting from the end frame of the machine, and having.its lower end connocted by means of a chain 24, passing over a pulley25, with the builder lever 26, which is depressed in the usual way bymeans of a cam to lower the guide frame. Intermediate of its ends thelever 21 is formed with a slot 27 to enable it to clear the axle 13 ofthe sprocket wheels 11, 12 and bear against the spring 18. It will beapparent that when the builder lever 26 is depressed to lower the guidesthe chain 24 will pull the lower end of the lever 21 towards the frameof the machine and such lever bearing against the spring 18 willincrease the tension of the spring, and that when the builder lever 26rises the chain 24 will release the pull on the lever 21 and the latterwill relieve the tension of the spring 18. Accordingly, there will beno, or a minimum, slip between the sprocket wheels when the yarn iswinding at the lower part of the chase and the pull of the spindle is aminimum,

while as the yarn rides up the chase and the pull of the spindlesincreases the wheel 12- can slip or over-run the wheel 11 to anincreasing extent to allow the spindles to pull the yarn through thedelivery rollers.

The range ofthe automatic variation QTE the tension of the spring 18 bythe lever 21 can be adjusted as required by adjusting the position ofthe block 22 on the stud arm 23 and/or by adjusting the length of thechain 24:.

What we clainr as our invention and desire to secure by Letters Patentis 1. In a yarn" winding machine, yarn delivery rollers, driving meansfor said rollers, and means torpermitting relative slip be tween saidrollers andsaid driving means during the operation of the'machine.

2. In a yarn winding machine, yarn deliveryrollers, drivin'g'meansforsaid rollers, and means for automatically permitting relative slipbetween said rollers and said drivin}; means during the operation of themachine.

3. In a' yarn winding machine, yarn delivery rollers, driving means forsaid rollers, and means for intermittently permitting said rollers to berotated at a greater speed than normally driven by said driving means.

46. In a yarn winding machine, yarn delivery rollers, driving means forsaid rollers, and means interposed between said rollers and said drivingmeans adapted to limit the effective driving torque of said drivingmeans upon said rollers.

5. In a yarn winding machine, yarn delivery rollers, driving'mea'nstorsaid rollers, and means interposed between said rollers and saiddriving means adapted to automatically vary the effective driving torqueof said driving meansupon said rollers.

6. In ajya rn winding machine, yarn delivery rollers, drivingmeans forsaid rollers, and means interposed between said rollers and saiddrivingmeans adapted to automaticallyv-ary the effective driving torqueof said driving means upon said rollers, comprising a clutcli, onemember of which is operably connected to the rollers and the othermember of which is connected to the driving means.

7. In a yarn winding machine, yarn delivery rollers, driving meansfor'said rollers, and means interposed between said rollers andsaid'driving means adapted to automatically vary the effective drivingtorque of said driving means upon said rollers, comprising a clutch, onemember of which is operably connected to the rollers and the othermember of which is connected to the driving i'neans, and an adjustablefriction element between said clutch members.

8. In a yarn winding machine, yarn deliveryroll'ers, dr'i'ving' meansfor said rollers, and means interposed between the rollers and saiddriving means adapted to limit the effective driving torque of saiddriving nmtieally varying the effectiveness of said means upon saidrollers, comprising a clutch, friction element.

one member of which is operably connected In witness whereof We havehereunto set 10 to the rollers, and another member of which our hands.

'5 is connected to the driving means, and an adjustable friction elementpositioned be- RICHARD ENHAL H HARPLES. tween said members, and meansfor auto- E W BRAHAM-

